Machine for buffing or shaving hides or skins



(No Model.) 4 Sheets--Sheet 1.

J.B0YLE.' MACHINE FOR BUPPING 0R SHAVING HIDES 0R SKINS.

No. 541,262. Patnted June 18 1895 r2 v v P r -H WITNESSES l \l\/: uqr

am am 1 4% Xm-MM y' w m: norms Pmns co, PNOTO-UYHO. wnsmumou w c.

4 Sheets-Sheet 2 (No Model.)

J. BOYLE. MACHINE FOR BUFPING 0R SHAVING HIDBS 0R SKINS.

Patented June 18, 1895.

wvENT-m WITNEEEIEEI rue mums Prrsns co. wno'raurna. wismr crou, o. c.

(No Model.) I 4 Sheets-Sheet 3.

J. BOYLE. I MACHINE FOR BUFFING 0R SHAVING HIDES 0R SKINS.

Patented June 18, 1895.

q l V n/ W .1 411/ v. r I

a noun: Persia an. Puoi'uu'mu Mmmmou. n c.

(No Model.) '4 Sheets-Sheet 4.

. J. BOYLE. MACHINE FOR BUPFING 0R SHAVING HIDES 0R SKINS. No. 541,262. Patented June 18, 1895.

WITNEEEEEI INVEHTUPU RRIS PETERS 00., Pumauwo" wy smycron, n. c,

Unrrnn STATES PATENT rrrca.

JOHN BOYLE, OF PEABODY, MASSACHUSETTS.

MACHINE FOR BUFFING OR SHAVING HIDES OR SKINS.

SPECIFICATION forming part of Letters Patent No. 541,262, dated June 18, 1895.

Application filed February 4, 1895- Serial No. 537,226. (NdmodeL) To all whom it may concern.-

Be it known that I, JOHN BOYLE, of Peabody, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Machines for Buffing or Shaving Hides or Skins, of which the following is a specification.

This invention relates to machines for buff ing or shaving hides or skins, the operation of buffing being the removal from the hair or grain side of a skin a layer of uniform thickness, including only the grain surface and not the fiber lying within, while the operation of shaving is the removal of sufficient material to leave the skin of a uniform thickness, taking off more or less of the fiber as the original thickness of the skin may require. Machines for performing these operations consist essentially of a rotating cutter-cylinder, and a presser-roll by which the skins are presented to and pressed against the cutter cylinder and over which the skins are drawn by a workman, and appropriate journals, bearin gs, driving and operating mechanism, contained in a supporting frame. Heretofore the presserrolls have been made with a straight unyielding surface parallel to the cutter-cylinder. There is no objection to this construction when the machines are used for shaving; but when used for buffing, serious damage results, sincethe varying thickness of the skin causes the cutter-cylinder to remove too much of portions of the grain and expose the fiber. Another objection is found in the arrangement of the knives upon the cutter-cylinder. These knives commonly extend in pairs from the middle of the cylinder in opposite spirals to the ends thereof and retreat from the direction of revolution, the purpose being to extend or spread the skin as the knives advance. As a result of this construction, the knives meet at the middle of the cylinder in an angle more or less obtuse, which advances in the direction of revolution and digs or cuts into the skin, marking and damaging the same. A further objection is that dragging the skin over the presser-roll by hand produces uneven results.

The object of my invention is to overcome these obj ections. I providea presser-roll composed of a series of independently yielding sections for use when buffing, and having a series of adjustable devices for supporting said sections unyieldingly when used for shaving. I also provide an improved cutter-cylinder; and finally, I provide afeeding beltor carrier.

Of the accompanying drawings, forming a part of this specification, Figure 1 is a plan of my improved buffing and shaving machine. Fig. 2 is a side elevation of the same. Fig. 3 is a front elevation of the same. Fig. 4 is a transverse section of my improved presserroll. Fig. 5 is a partial longitudinal section of Fig. 4. Fig. 6 is a side elevation of a part of a buffing and shaving machine, showing my feeding belt or carrier and a modification of my improved presser-roll.

Corresponding parts in the several views are denoted by like letters of reference.

A is myimproved presser-roll, supported by a swinging frame B hung in a fixed frame G supporting the operative parts of the entire machine. The said swinging frame is engaged with and operated by a foot-treadle D, all in the usual manner and purpose. The said presser-roll has a fixed longitudinal flat bar or axis a secured in the swinging frame B with its edge a toward the cutter-cylinder E and provided with a series of transverse cells or perforations I) each screw-threaded at one end and containing a spring 0, an adjustable spring abutment d consisting of a screw fitted to the threaded portion thereof, and a spring-actuated plunger e projecting from the edge a of the axis. Located upon the axis coincidently with the cells or perforations and the contained mechanism, is a corresponding series of independently yielding sections, each comprising a disk f having a slotf fitting closely to the sides of the axis but of a length greater than the width thereof, and an external annular roller g turning upon the disk, which latter serves as a journal or hearing therefor.

The purpose and operation are evident. When the presser-roll, with a skin placed over the same for bulfing, isadvanced against the cutter-cylinder E, the pressure is transmitted through the rollers, disks, plungers, and springs, to the abutments, causing a compression of the springs, and each section is free to yield more orless as the varying thickness of the skin may require and for the pur- ICO pose set forth, each disk sliding upon the axis and against the adjacent disks. v

Referring now to the adjustable device for supporting unyieldingly the movable sections of my improved presser-roll, a series of idler rollers h is provided, each hung in a lever 75 and adapted to being pressed against a corresponding annnlar roller 9 at that part of the periphery opposite the cutter-cylinder E by the simultaneous action of a series of screws Z having geared heads m operated by an endless worm-shaft n, the said screws actingagainst the end of the lever k through interposed springs 0 and plungers p, the whole being suitably fixed in and supported bythe swinging frame B.

Vhen the screws Z are retracted, the sections of the presser roll are free to move independently; but upon advancing the screws 1 to their full extent by means of the wormshaft 72 the pressure of the idler rolls upon the said sections is such as to render them practically unyielding except as a whole and for the purpose set forth.

E is my improved cutter-cylinder,supported by and rotating in the frame 0 and having a sharpening wheel F provided with adjusting and feeding mechanism, all in the usual On the cutter-cylinder E are the usual -series of spirally arranged knives q 1' meeting My improvement tintersecting said angles, the edge thereof being deflected alternately toward each end of the cylinder andefiectively preventing the digging 'in of the angles as they advance in 1 disksand independently movable toward and the direction of revolution, as set forth.

Gis my improved feeding-belt oir carrier; interposed between the presser-roll A and the cutter-cylinder E, said belt passing over the idler pulley U and the driving-pulley V, 1 the former being supported by an extension i B of the swinging frame B, as shown, andf the latter being placed upon the shaft B, which forms the fulcrum of said frame, and

roll and thereby enable the machine to per- At A is Z m n 0' p, &c., is shown a mod i-' fication of my improved presser-roll applied and adapted to the support of my feeding-belt 7 j series of knives, and a peripheral guard'knife Upon placing a skin upon the belt G and I advancingthe frame 13 by means of the tread le O to the cutter-cylinder, the skin will be fed 1 by and against the said cutter-cylinder; and by suit-ably adjusting my improved presser- :1

driven by the belt W.

or carrier.

roll may be either buffed or shaved.

which the belt Gr may slide.

the cutter-cylinder.

I clain1--- 1 In a machine of the character specified,

independently crosswise of said bar, a series of rings of rigid material 'mounted on said disks and independentlymovabletoward and from the cutter, and means for pressing said rings and disks independently and yieldin'gly toward the cutter, said rings collectively constituting a pressure roll which is movable bodily toward and from the cutter by the swingingframe andis adapted to yield locally.

2. In a machineof the character specified, the combination of a rotary cutter having spirally arranged knives, a swinging frame movable toward and from said cutter, a roll-supporting bar or axis mounted on said frame, a series of non-rotating disks mounted to move independently crosswise of said bar, a series of independent springs supported by the bar and arranged to press said disks toward the cutter, and a series of rings of rigid material mounted on said disks and independently movable'therewith toward and from the cutter,said rings collectively constituting a presswe roll which is movable bodily toward and from the cutter by the swinging frame and is adopted to yield locally.

3. A machine of'thecharacter specified, comprising in its construction a rotary cutter having spirally arranged knives, a swinging frame movable toward and from the cutter, a rollsupporting barorax-is mounted on said frame, a series of non-rotating disks-mounted to move independently crosswise of said bar, a series of rings of rigid material mounted'on said from the cutter, means for pressing said rings and disks independently and yieldingly toward the cutter, said rings collectively constituting a pressure roll which is movable bodily toward and from the cutter by the swinging frame and is adapted to yield locally, and means for confining the disks upon the bar to prevent the local yielding of the pressure form the operation of shaving.

4. In a machine of the character specified, a cutter-cylinder having the usual double spiral intersecting the angles of the spiral knives, the said guard-knife being deflected alternately toward each end of the cylinder and extending across the spaces between the spiral knives, for the purpose set forth.

5. The combination of aseries-of independently yielding sections; a fixed central longitudinal flat bar or axis provided with a series of transverse cells or perforations each conlVhen my improved machine is requiredf only for the shaving of skins, I provideaj straight unyielding pressure-roll parallel to taining a spring, a spring-abutment, and a spring-actuated plunger; acorresponding series of disks located on the axis coincidently with the said cells orperforations, each disk 5 having a-slot fitting closely to the sides of the axis but of a length greater than the width thereof, the said disks serving as hearings; and a series of adjacent external annular rollers mounted to rotate on said bearings, each roller and disk being independently free to move transversely of the axis upon the application of external pressure against the restraining action of the contained spring.

6. The combination of aseries of independently yielding sections; a fixed central longitudinal flat bar or axis provided with a series of transverse cells or perforations each containing a spring, a spring-abutment, and a spring-actuated plunger; a corresponding series of disks located on the axis coincidently with the said cells or perforations, each disk having a slot fitting closely to the sides of the axis but of a length greater than the width thereof, the said disks serving as bearings; a series of adjacent external annular rollers mounted to rotate on said bearings, each roller and disk being independently free to move transversely of the axis upon the application of external pressure against the restraining JOHN BOYLE.

Witnesses:

A. D. HARRISON, ROLLIN ABELL. 

